Structural Engineering and Mechanics

  • 제19권4호
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  • Pages.361-379
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  • 2005
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
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Strut-and-tie model of deep beams with web openings - An optimization approach

  • Guan, Hong (School of Engineering, Griffith University Gold Coast Campus)
  • 투고 : 2003.06.28
  • 심사 : 2004.11.10
  • 발행 : 2005.03.10
⟨ 이전 논문 다음 논문 ⟩

초록

Reinforced concrete deep beams have useful applications in tall buildings and foundations. Over the past two decades, numerous design models for deep beams were suggested. However even the latest design manuals still offer little insight into the design of deep beams in particular when complexities exist in the beams like web openings. A method commonly suggested for the design of deep beams with openings is the strut-and-tie model which is primarily used to represent the actual load transfer mechanism in a structural concrete member under ultimate load. In the present study, the development of the strut-and-tie model is transformed to the topology optimization problem of continuum structures. During the optimization process, both the stress and displacement constraints are satisfied and the performance of progressive topologies is evaluated. The influences on the strut-and-tie model in relation to different size, location and number of openings, as well as different loading and support conditions in deep beams are examined in some detail. In all, eleven deep beams with web openings are optimized and compared in nine groups. The optimal strut-and-tie models achieved are also compared with published experimental crack patterns. Numerical results have shown to confirm the experimental observations and to efficiently represent the load transfer mechanism in concrete deep beams with openings under ultimate load.

키워드

참고문헌

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피인용 문헌

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  2. Layout design of reinforced concrete structures using two-material topology optimization with Drucker–Prager yield constraints vol.47, pp.1, 2013, https://doi.org/10.1007/s00158-012-0809-1
  3. Application of plasticity theory to reinforced concrete deep beams: a review vol.60, pp.9, 2008, https://doi.org/10.1680/macr.2008.00038
  4. Performance-Based Optimization: A Review vol.10, pp.6, 2007, https://doi.org/10.1260/136943307783571418
  5. Genetic algorithm optimization of precast hollow core slabs vol.13, pp.3, 2014, https://doi.org/10.12989/cac.2014.13.3.389
  6. Development of Strut-And-Tie Models in Deep Beams with Web Openings vol.10, pp.6, 2007, https://doi.org/10.1260/136943307783571427
  7. Stress-based topology optimization of concrete structures with prestressing reinforcements vol.45, pp.11, 2013, https://doi.org/10.1080/0305215X.2012.734816
  8. Topology optimization of the structure using multimaterial inclusions vol.33, pp.3, 2009, https://doi.org/10.12989/sem.2009.33.3.285
  9. A hybrid simulated annealing and optimality criteria method for optimum design of RC buildings vol.35, pp.1, 2005, https://doi.org/10.12989/sem.2010.35.1.019
  10. A critical evaluation of topology optimization results for strut‐and‐tie modeling of reinforced concrete vol.35, pp.8, 2005, https://doi.org/10.1111/mice.12537
  11. Topology optimization of multi-material structures with elastoplastic strain hardening model vol.64, pp.3, 2005, https://doi.org/10.1007/s00158-021-02905-3